CN103746673A - Pulse signal generator - Google Patents
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- CN103746673A CN103746673A CN201310699588.XA CN201310699588A CN103746673A CN 103746673 A CN103746673 A CN 103746673A CN 201310699588 A CN201310699588 A CN 201310699588A CN 103746673 A CN103746673 A CN 103746673A
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Abstract
The invention relates to a pulse signal generator comprising a DC high voltage source, a voltage display unit, a coaxial current-limiting unit, a TLP circuit, a pulse control unit, a drive amplification unit and a frequency counting and display unit. The DC high voltage source is used for converting alternating current commercial power into continuously adjustable direct current. The coaxial current-limiting unit is used for controlling size of charging current of the TLP circuit which is used for generating a nanosecond-level high current pulse signal. A frequency signal outputted by the pulse control unit is amplified by the drive amplification unit and then controls a working mode of the TLP circuit. The frequency counting and display unit counts and displays the frequency signal generated by the pulse control unit. A situation that existing pulse signal generators cannot output pulse signals which are rapid in rising period of time and short in action time is solved by the pulse signal generator. The pulse signal generator is the device capable of generating the pulse signal which is rapid in rising period of time, short in action time and wide in amplitude dynamic range so that a requirement of anti-interference performance assessment of an electronic device can be met.
Description
Technical field
The present invention relates to a kind of interference signal generating apparatus, relate in particular to and a kind ofly can produce the rise time and fall time is fast, action time is short, amplitude dynamic range is large pulse signal device.
Background technology
Along with the development of electronic technology, various equipments have generally been realized electrification.The interference free performance of electronic equipment more and more causes people's attention.The electronic equipment manufacturing and designing, its interference free performance how, certainly can under the noise circumstance at various scenes, test to assert.Yet because the interference producing is at the scene accidental random mostly, test for a long time, does not probably repeat.Once and occur, then resort to every means and find any partial circuit generation misoperation actually, have little time often.So, need a kind of interference source device, it is the repeatedly interference of frequent simulated field not only, but also continuous adjusting strength is big or small quantitatively, make people be disturbed the phenomenon producing according to circuit each several part, find by easy stages the reason of interference and the approach of interference, and the degree that interference free performance improves afterwards of taking measures is confirmed in contrast.
Pulse signal generator is an a kind of noise source of artificially manufacturing for analog electronic equipment is subject at the scene the actual conditions of noise jamming.The mode that the logical super-high-current of this pulse signal generator injects be exclusively used in assessment high power electromagnetic pulse to electronic equipment destruction (for example power signal of thunder and lightning, the output of nuclear electromagnetic pulse simulator).Existing pulse signal generator cannot be exported the pulse signal of rise time fast (nanosecond), action time short (nanosecond), amplitude dynamic range large (from zero volt spy to thousands of volts), and existing pulse signal generator also cannot be for assessment of the ability of the anti-high power electromagnetic pulse interference of electronic equipment.
Summary of the invention
In order to solve existing pulse signal generator, cannot export the pulse signal that the rise time is fast, action time is short, amplitude dynamic range is large, cannot be for assessment of the technical problem of electronic equipment electromagnetic pulse-resisting interference performance, the invention provides a kind of pulse signal generator, it can produce the pulse signal generating apparatus that the rise time is fast, action time is short, amplitude dynamic range is large, meets the demand of electronic equipment anti-jamming performance evaluation.
Technical solution of the present invention:
Pulse signal generator, its special character is: comprise DC high-voltage source, voltage display unit, coaxial current limliting unit, TLP circuit, pulse control unit, drive amplification unit, frequency counting and display unit;
Described DC high-voltage source is for being converted to continuously adjustable direct current by electric main, and DC high-voltage source provides operating voltage for TLP circuit;
Described coaxial current limliting unit is for controlling the charging current of TLP circuit;
TLP circuit is the extremely steep and fixing shot nanosecond pulse pulse signal of pulsewidth for generation of rising edge;
The frequency signal of described pulse control unit output is controlled the mode of operation of TLP circuit after drive amplification unit amplifies;
The frequency signal that described frequency counting and display unit paired pulses control unit send is added up and is shown.
Above-mentioned DC high-voltage source comprises alternating current supply filter, variable-voltage transformer, power transformer and the voltage doubling rectifing circuit connecting successively, the input termination civil power of described alternating current supply filter, the output dc voltage of described voltage doubling rectifing circuit.
Above-mentioned alternating current supply filter comprises inductance L 1, inductance L 2, electric capacity (C1-C4), one end of power line L termination capacitor C2, capacitor C 3, inductance L 1; Power line N end is wanted to connect with the other end of capacitor C 2, one end of one end of capacitor C 4, inductance L 2; The other end ground connection of the other end of capacitor C 3 and capacitor C 4; One end of another termination capacitor C 1 of inductance L 1; The other end of another termination capacitor C 1 of inductance L 2; The voltage at capacitor C 1 two ends is the supply voltage of exporting after filtering.
Above-mentioned voltage doubling rectifing circuit comprises rectifier diode D1, rectifier diode D2, capacitor C 5, capacitor C 6, and the anode of rectifier diode D1 connects the negative electrode of rectifier diode D2; The negative electrode of rectifier diode D1 connects one end of capacitor C 5, the anode of rectifier diode D2 connects one end of capacitor C 6, the other end of capacitor C 5 is connected with the other end of capacitor C 6, and input AC electricity is introduced from the common port of common port, capacitor C 5 and the capacitor C 6 of rectifier diode D1 and rectifier diode D2 respectively.
Also comprise for showing the voltage display unit of the output dc voltage size of DC high-voltage source;
Described voltage display unit comprises divider resistance R
div, DM digital panel meter, described divider resistance R
divdirect voltage to DC high-voltage source output carries out dividing potential drop, one end of described DM digital panel meter and divider resistance R
divstiff end connect, the other end of described DM digital panel meter and divider resistance R
divsliding end connect.
Above-mentioned coaxial current limliting unit comprises resistance, metal shell and two bnc connectors of a plurality of series connection, the resistance of described a plurality of series connection is placed in metal shell, described two bnc connectors are all fixed on metal shell, the two ends of the resistance of series connection connect respectively the inner wire of two bnc connectors, the outer conductor of described two bnc connectors all with metal shell conducting, the outer conductor of one of them bnc connector is connected with DC high-voltage source negative pole, and the outer conductor of another bnc connector is connected with TLP circuit.
Above-mentioned TLP circuit comprises the energy storage open circuited transmission line L connecting successively
4, switch module and pulse daley transmission line L
5, described energy storage open circuited transmission line L
4length be L
4, characteristic impedance is Z
0, described pulse daley transmission line L
5the other end be connected with load R
0,
Energy storage open circuited transmission line L in described TLP circuit
4be connected with coaxial current limliting unit; The resistance of described coaxial current limliting unit is far longer than Z
0, described energy storage open circuited transmission line L
4characteristic impedance Z
0equal load,
Described pulse control unit is by the folding of drive amplification unit controls switch module.
Above-mentioned switch module comprises relay K 1, metal shell, is fixed on input bnc connector and output bnc connector on metal shell, described relay is placed in metal shell, the inner wire of described input bnc connector is connected with the signal input part of relay, the inner wire of described output bnc connector is connected with the signal output part of relay K 1, the outer conductor of input, output bnc connector all with metal shell conducting, input bnc connector and energy storage open circuited transmission line L
4connect output bnc connector and pulse daley transmission line L
5connect;
Described relay is mercury wetted contact relay, and the control end coil of described mercury wetted contact relay meets diode D3.
Above-mentioned pulse control unit comprises pulse single circuits for triggering, pulse continuous trigger circuit and selector switch K4; Described pulse single circuits for triggering comprise K switch 3; Described pulse continuous trigger circuit comprises 555 timers, resistance R 6, resistance R 7, K switch 2 and electric capacity (C7-C9),
1 pin ground connection of described 555 timers, a stiff end of the sliding end of 2 pin of 555 timers, 6 pin, resistance R 7, resistance R 7 is connected in common point Uc, and common point Uc connects the common port of K switch 2; After one end of capacitor C 7, capacitor C 8, capacitor C 9 connects together, its common point ground connection, the other end of capacitor C 7, capacitor C 8, capacitor C 9 connects respectively three signal route origin ends of K switch 2, and 3 pin of 555 timers connect K switch 4, for exporting oscillator wave; 4 pin and 8 pin of 555 timers meet power supply Ucc, 7 pin of 555 timers meet power supply Ucc after by series resistance R6, another stiff end connecting resistance R6 of resistance R 7 and 7 pin of 555 timers, the public termination driver element of K switch 4, one end of another signal route origin termination K switch 3 of K switch 4, another termination positive supply of K switch 3.
Above-mentioned energy storage open circuited transmission line L
4by cable coiling on cylinder frame, formed described pulse daley transmission line L
5the negative electrode bnc connector and the anode bnc connector that comprise a coaxial cable and be fixed on coaxial cable two ends, described negative electrode bnc connector is fixed on pulse signal generator casing front panel, and described anode bnc connector docks with the output bnc connector in switch module.
The present invention has advantages of:
Pulse signal generator output rectangular pulse signal of the present invention, empirical tests, reaches following technical indicator:
1. pulse signal generator output of the present invention rectangular pulse signal edge is precipitous.Output pulse signal rising edge is less than 2ns, and trailing edge is less than 2ns.
2. to export rectangular pulse signal short action time in the present invention.The duration of output pulse signal, to be 30ns can match to the 40ns(pulse duration).
3. the present invention exports the amplitude dynamic range of rectangular pulse signal.The amplitude of output pulse signal arrives within the scope of 2000V adjustable at 0V.
4. it is flexible that the present invention exports the mode of rectangular pulse signal.Can single output pulse signal (clicking a pulse of trigger button output); Also can Automatic continuous output pulse signal, output frequency is adjustable continuously to 60Hz at 1Hz.
5. pulse signal generator output loading of the present invention is standard termination-50 ohm load.
Accompanying drawing explanation
Fig. 1 is the theory diagram of pulse signal generator;
Fig. 2 is the structured flowchart of DC high-voltage source;
Fig. 3 is alternating current supply filter schematic diagram;
Fig. 4 is variable-voltage transformer schematic diagram;
Fig. 5 is voltage doubling rectifing circuit figure;
Fig. 6 is the structure chart of voltage display unit;
Fig. 7 is the structure chart of coaxial current limliting unit;
Fig. 8 is coaxial current limliting cellular installation schematic diagram;
Fig. 9 is TLP circuit theory diagrams;
Figure 10 is TLP circuit realization figure;
Figure 11 is the structure chart of energy storage open circuited transmission line;
Figure 12 is the structure chart of pulse daley transmission line;
Figure 13 is pulse control unit structure chart;
Figure 14 is oscillator wave figure.
Embodiment
Below in conjunction with Figure of description, describe the specific embodiment of the present invention in detail, but embodiments of the present invention are not limited to this.
Pulse signal generator adopts transmission line mode to realize.As shown in Figure 1, pulse signal generator consists of DC high-voltage source, voltage display unit, coaxial current limliting unit, TLP circuit (TLP, transmission-line pulse), pulse control unit, drive amplification unit, frequency counting and display unit.Wherein:
DC high-voltage source is converted to direct current by electric main, and output dc voltage is adjustable continuously, and DC high-voltage source provides operating voltage for TLP circuit.Voltage display unit is for showing the output dc voltage of DC high-voltage source, and coaxial current limliting unit is for controlling the charging current of TLP circuit.
TLP circuit produces rising edge extremely suddenly and the fixing shot nanosecond pulse pulse signal of pulsewidth.
Pulse control unit output frequency signal, after drive amplification unit amplifies, is controlled TLP circuit, makes TLP circuit produce continuously rising edge extremely suddenly and the fixing high-voltage pulse signal of pulsewidth according to specific frequency, and output pulse frequency is adjustable continuously; Or make TLP circuit single export rising edge extremely suddenly and the fixing heavy current pulse signal of pulsewidth.
The control signal that frequency counting and display unit paired pulses control unit send is added up and is shown.
As shown in Figure 2, DC high-voltage source consists of alternating current supply filter, variable-voltage transformer, power transformer, voltage doubling rectifing circuit.DC high-voltage source is exported after 220V alternating current is converted to direct current, and output dc voltage size is adjustable, and adjustable range is 0～2000V.For convenience of test, output dc voltage size shows on display unit.
As shown in Figure 3, alternating current supply filter is by L1, L2, and C1～C4 forms.One end of power line (L end) connects one end of capacitor C 2, C3, inductance L 1; The other end of power line (N end) connects one end of capacitor C 2, C4, inductance L 2; The common end grounding of capacitor C 3, C4; One end of another termination capacitor C 1 of inductance L 1; The other end of another termination capacitor C 1 of inductance L 2; The voltage at capacitor C 1 two ends is the supply voltage of exporting after filtering.Power-supply filter is a kind ofly to allow near frequency content supply frequency pass through, higher than this frequency content very large circuit of decaying.Power input part divides installation power-supply filter, for the various noises that suppress in electrical network, has played key effect, has greatly improved the antijamming capability of pulse signal generator self.L1 and L2 are high impedances for noise source, and C1 is Low ESR.L1 and L2 are common mode chokes, can cut much ice to filtering common mode noise, and C1, C2 work to filtering differential mode noise, and C3, C4 work to filtering common mode noise.
As shown in Figure 4, variable-voltage transformer is exactly the continuously adjustable autotransformer of the turn ratio, and its core component is inductance coil L3, and wherein U1 represents input voltage, and U2 represents output voltage.When voltage regulator brush is under the effect of handwheel main shaft and brush holder, while sliding along the polished surface of inductance coil L3, just change serially the turn ratio, thereby make output voltage from zero, be adjusted to maximum smoothly.Variable-voltage transformer product is comprised of inductance coil, brush, handwheel, dial and drain pan, outer cover etc.Select and there is the ripe variable-voltage transformer product that waveform is undistorted, volume is little, lightweight, efficiency is high, can operate reliably, realize high-quality voltage-regulation.Amplitude adjusted knob on the handwheel respective pulses signal generator panel of variable-voltage transformer.
The function of power transformer is to carry out voltage transformation.Power transformer is single-phase, step-up transformer.Pulse signal generator needs a 220V/2000V booster power transformer.
Voltage doubling rectifing circuit input ac voltage, output dc voltage.As Fig. 5, voltage doubling rectifing circuit is by one group of coil and two rectifier diodes, and the anode that two electric capacity forms rectifier diode D1 connects the negative electrode of rectifier diode D2; The negative electrode of D1 connects one end of capacitor C 5, and the anode of D2 connects one end of capacitor C 6, and the other end of C5 is connected with the other end of C6.Input AC electricity is introduced from the common port of common port, C5 and the C6 of D1 and D2 respectively; Output direct current is held output from A, C.When coil upper end is timing, the electric current D1 that flows through gets back to coil negative terminal, and at this moment, to C5 charging, C5 two ends reach the voltage of 1.414e2, and substantially remain unchanged; When coil upper end is when negative, the electric current D2 that flows through fills the voltage of 1.414e2 with to C6, thereby between AC and BC, obtain respectively the VD of positive and negative 1.414e2, between AB, obtain the VD of 2.828e2, the maximum direction voltage that each diode bears is 2.828e2, and the voltage bearing on capacitor C5, C6 is respectively 1.414e2.C5, C6 capacitor is high voltage energy-storage capacitor, D1, D2 is large-current high-voltage diode.(T1 in Fig. 5 is power transformer, the power transformer in corresponding diagram 2)
DC high-voltage source can produce 0V to the direct voltage of 2000V, in order to facilitate instrument to use, has designed function displaying voltage.As shown in Figure 6, by voltage display unit, carry out direct voltage demonstration.By divider resistance R
divdirect voltage to DC high-voltage source output carries out dividing potential drop, and the direct voltage after adopting 3 ripe half DM digital panel meters to dividing potential drop shows.Adjust direct voltage 0～1999V that DM digital panel meter indication range is the corresponding DC high-voltage source output of 0～1999(), Designing Digital Voltmeters use+5V Power supply, simplifies distribution design.Charging voltage display screen on the corresponding panel of DM digital panel meter.
As shown in Figure 7, coaxial current limliting unit is in series by the resistance of 5 240k Ω, 1W.As shown in Figure 8,5 resistance are connected by welding manner, and the resistance after series connection is put into metal shell, and after series connection, the two ends of resistance connect respectively the inner wire of two bnc connectors.Bnc connector is directly fixed on metal shell, the outer conductor of bnc connector and metal shell conducting.The bnc connector of input connects DC high-voltage source, and the inner wire of the bnc connector of input connects DC high-voltage source positive pole, and the outer conductor of the bnc connector of input connects DC high-voltage source negative pole.The bnc connector of output connects the energy storage transmission line of TLP circuit, and energy storage transmission line is also bnc interface, and both directly can realize interconnection to inserting.
As shown in Figure 9, TLP circuit is by energy storage open circuited transmission line L
4, pulse daley transmission line L
5form with switch module.Switch module inside comprises a relay K 1.When relay K 1 is not closed, high direct voltage is by coaxial current limliting unit R
eq(R
eqthe series equivalent resistance of resistance R 1～R5) to length, be L
4, characteristic impedance Z
0transmission line L
4charging, until be charged to E on transmission line.If transmission line L
5right-hand member is connected to and specified impedance Z
0equal load R
0, when relay K 1 is closed, due to R
eqbe far longer than Z
0, can be transmission line L
4left end regard open circuit as, pulse is through transmission line L
5after time delay, (delay time is L
5/ v, v is voltage velocity of wave propagation), at load R
0on can obtain and hold time as 2L
4the square-wave voltage that/v, amplitude are E/2.
As shown in figure 10, the switch module of TLP circuit is realized by mercury wetted contact relay K1.Mercury wetted contact relay K1 is arranged in metal shell, and the two ends of relay K 1 (signal input part and signal output part) connects respectively the inner wire of two bnc connectors.Bnc connector is directly fixed on metal shell, the outer conductor of bnc connector and metal shell conducting.The bnc connector of input connects energy storage open circuited transmission line, the bnc connector of output connect transmission time-delay line.The control end coils from parallel connection of coils diode D3 of mercury wetted contact relay K1 protects.The control end coil of mercury wetted contact relay K1 connects drive amplification unit.Drive amplification unit is a triode, for the output signal of pulse control unit being carried out to the after-applied control end coil to mercury wetted contact relay of voltage amplification.Triode Q1 base stage connects pulse control unit (common port of K switch 4, is shown in Figure 13), triode Q1 grounded emitter (low pressure ground), and triode Q1 collector electrode connects the anode of diode D3, and the negative electrode of diode D3 connects 24V DC power supply.
As shown in figure 11, energy storage open circuited transmission line is formed by cable coiling on cylinder frame.Cable is coaxial cable, characteristic impedance 50 Ω, and cylinder frame is made by epoxy glass fabric pipe, and coaxial cable is coiling one deck on hollow backbone, coiling 10 circles.Between coil, arrange compactly, do not stay gap, stick with glue and connect coaxial cable, make that whole coil is firm to be fixed on hollow backbone.Bnc connector is installed at the two ends of coaxial cable, is connected with external circuit.The cylinder frame of energy storage open circuited transmission line is fixed on box bottom.
As shown in figure 12, transmission time-delay line is a coaxial cable, Characteristic Impedance of Coaxial Cables is 50 Ω, bnc connector is installed at the two ends of coaxial cable, wherein one end is BNC(negative electrode), the other end is BNC(anode), BNC(negative electrode) end by screw, be arranged on panel, the signal output port on corresponding panel.BNC(anode) inner wire of end connects the relay (relay K 1 in corresponding Figure 10) of TLP circuit, BNC(anode) outer conductor of end connects the metal shell that TLP contactor assembly is installed.
As shown in figure 13, pulse control unit is comprised of pulse single circuits for triggering and pulse continuous trigger circuit.Under continuous trigger mode, the trigger rate that pulse control unit can control impuls.Single triggers and triggers by button, often presses the button once, and pulse signal generator is just exported a pulse signal.Continuous trigger triggers by oscillator, and pulse signal generator output pulse signal number is identical with the frequency of oscillator.Oscillator consists of 555 timers.1 pin ground connection of 555 timers (low pressure ground), after a stiff end of the sliding end of 2 pin of 555 timers, 6 pin and resistance R 7, R7 connects together, its common point Uc connects the common port of K switch 2; After one end of capacitor C 7, C8, C9 connects together, its common point ground connection (low pressure ground), the other end of capacitor C 7, C8, C9 connects respectively three signal route origin ends of K switch 2, and 3 pin of 555 timers connect K switch 4, for exporting oscillator wave; 4 pin and 8 pin of 555 timers meet power supply Ucc, 7 pin series resistance R6 of 555 timers and meet power supply Ucc, the common port of the other end connecting resistance R6 of resistance R 7 and 7 pin of 555 timers.The public termination driver element of K switch 4, one end of another signal route origin termination K switch 3 of K4, another termination+5V power supply of K switch 3.
Oscillator wave as shown in figure 14.Be T=t cycle of oscillation
ph+ t
pl=0.7(R
6+ R
7) C.By adjusting resistance R
7with capacitor C size, can change cycle of oscillation.Resistance R
7for adjustable resistance, by changing R
7value can accurate adjustment cycle of oscillation, the value of capacitor C is switched in capacitor C 7, C8, C9 by switch, by changing capacitor C coarse adjustment cycle of oscillation.Resistance R
7the corresponding panel in adjustable side on frequency adjustment knob, three buttons on the corresponding panel of capacitance selection K switch 2 under PPS scope.Single trigger button on the corresponding panel of K switch 3 of single circuits for triggering.The corresponding panel upper frequency of selector switch K4 regulates button (frequency adjustment button is the potentiometer knob of belt switch function).
Frequency counting and display unit, for measuring and show the frequency of output pulse signal, facilitate the use of pulse signal generator.Design adopts ripe commercialization frequency meter paired pulses triggering signal to carry out frequency measurement, adopts ripe commercialization digitizing tablet instrument to carry out frequency demonstration.Pulse frequency display screen on the corresponding panel of display of frequency meter.
Claims (10)
1. pulse signal generator, is characterized in that: comprise DC high-voltage source, coaxial current limliting unit, TLP circuit, pulse control unit, drive amplification unit, frequency counting and display unit;
Described DC high-voltage source is for being converted to continuously adjustable direct current by electric main, and DC high-voltage source provides operating voltage for TLP circuit;
Described coaxial current limliting unit is for controlling the charging current of TLP circuit;
TLP circuit is the extremely steep and fixing shot nanosecond pulse pulse signal of pulsewidth for generation of rising edge;
The frequency signal of described pulse control unit output is controlled the mode of operation of TLP circuit after drive amplification unit amplifies;
The frequency signal that described frequency counting and display unit paired pulses control unit send is added up and is shown.
2. pulse signal generator according to claim 1, it is characterized in that: described DC high-voltage source comprises alternating current supply filter, variable-voltage transformer, power transformer and the voltage doubling rectifing circuit connecting successively, the input termination civil power of described alternating current supply filter, the output dc voltage of described voltage doubling rectifing circuit.
3. pulse signal generator according to claim 1, is characterized in that: described alternating current supply filter comprises inductance L 1, inductance L 2, electric capacity (C1-C4) one end of power line L termination capacitor C2, capacitor C 3, inductance L 1; Power line N end is wanted to connect with the other end of capacitor C 2, one end of one end of capacitor C 4, inductance L 2; The other end ground connection of the other end of capacitor C 3 and capacitor C 4; One end of another termination capacitor C 1 of inductance L 1; The other end of another termination capacitor C 1 of inductance L 2; The voltage at capacitor C 1 two ends is the supply voltage of exporting after filtering.
4. pulse signal generator according to claim 1, is characterized in that: described voltage doubling rectifing circuit comprises rectifier diode D1, rectifier diode D2, capacitor C 5, capacitor C 6, and the anode of rectifier diode D1 connects the negative electrode of rectifier diode D2; The negative electrode of rectifier diode D1 connects one end of capacitor C 5, the anode of rectifier diode D2 connects one end of capacitor C 6, the other end of capacitor C 5 is connected with the other end of capacitor C 6, and input AC electricity is introduced from the common port of common port, capacitor C 5 and the capacitor C 6 of rectifier diode D1 and rectifier diode D2 respectively.
5. pulse signal generator according to claim 1, is characterized in that: also comprise for showing the voltage display unit of the output dc voltage size of DC high-voltage source;
Described voltage display unit comprises divider resistance R
div, DM digital panel meter, described divider resistance R
divdirect voltage to DC high-voltage source output carries out dividing potential drop, one end of described DM digital panel meter and divider resistance R
divstiff end connect, the other end of described DM digital panel meter and divider resistance R
divsliding end connect.
6. pulse signal generator according to claim 1, it is characterized in that: described coaxial current limliting unit comprises the resistance of a plurality of series connection, metal shell and two bnc connectors, the resistance of described a plurality of series connection is placed in metal shell, described two bnc connectors are all fixed on metal shell, the two ends of the resistance of series connection connect respectively the inner wire of two bnc connectors, the outer conductor of described two bnc connectors all with metal shell conducting, the outer conductor of one of them bnc connector is connected with DC high-voltage source negative pole, the outer conductor of another bnc connector is connected with TLP circuit.
7. pulse signal generator according to claim 1, is characterized in that: described TLP circuit comprises the energy storage open circuited transmission line L connecting successively
4, switch module and pulse daley transmission line L
5, described energy storage open circuited transmission line L
4length be L
4, characteristic impedance is Z
0, described pulse daley transmission line L
5the other end be connected with load R
0,
Energy storage open circuited transmission line L in described TLP circuit
4be connected with coaxial current limliting unit; The resistance of described coaxial current limliting unit is far longer than Z
0, described energy storage open circuited transmission line L
4characteristic impedance Z
0equal load,
Described pulse control unit is by the folding of drive amplification unit controls switch module.
8. pulse signal generator according to claim 7, it is characterized in that: described switch module comprises relay K 1, metal shell, be fixed on input bnc connector and output bnc connector on metal shell, described relay is placed in metal shell, the inner wire of described input bnc connector is connected with the signal input part of relay, the inner wire of described output bnc connector is connected with the signal output part of relay K 1, input, the outer conductor of output bnc connector all with metal shell conducting, input bnc connector and energy storage open circuited transmission line L
4connect output bnc connector and pulse daley transmission line L
5connect,
Described relay is mercury wetted contact relay, and the control end coil of described mercury wetted contact relay meets diode D3.
9. according to the arbitrary described pulse signal generator of claim 1-8, it is characterized in that:
Described pulse control unit comprises pulse single circuits for triggering, pulse continuous trigger circuit and selector switch K4; Described pulse single circuits for triggering comprise K switch 3; Described pulse continuous trigger circuit comprises 555 timers, resistance R 6, resistance R 7, K switch 2 and electric capacity (C7-C9),
1 pin ground connection of described 555 timers, a stiff end of the sliding end of 2 pin of 555 timers, 6 pin, resistance R 7, resistance R 7 is connected in common point Uc, and common point Uc connects the common port of K switch 2; After one end of capacitor C 7, capacitor C 8, capacitor C 9 connects together, its common point ground connection, the other end of capacitor C 7, capacitor C 8, capacitor C 9 connects respectively three signal route origin ends of K switch 2, and 3 pin of 555 timers connect K switch 4, for exporting oscillator wave; 4 pin and 8 pin of 555 timers meet power supply Ucc, 7 pin of 555 timers meet power supply Ucc after by series resistance R6, another stiff end connecting resistance R6 of resistance R 7 and 7 pin of 555 timers, the public termination driver element of K switch 4, one end of another signal route origin termination K switch 3 of K switch 4, another termination positive supply of K switch 3.
10. pulse signal generator according to claim 7, is characterized in that: described energy storage open circuited transmission line L
4by cable coiling on cylinder frame, formed described pulse daley transmission line L
5the negative electrode bnc connector and the anode bnc connector that comprise a coaxial cable and be fixed on coaxial cable two ends, described negative electrode bnc connector is fixed on pulse signal generator casing front panel, and described anode bnc connector docks with the output bnc connector in switch module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699588.XA CN103746673B (en) | 2013-12-18 | 2013-12-18 | Pulse signal generator |
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| CN104901655A (en) * | 2015-06-16 | 2015-09-09 | 成都宜川电子科技有限公司 | Signal generator |
| CN105388889A (en) * | 2015-12-17 | 2016-03-09 | 镇江市高等专科学校 | Signal generator for pavement construction machinery product control system |
| CN111130507A (en) * | 2019-12-23 | 2020-05-08 | 北京大学 | Circuit for generating bimodal waveform conforming to IEC61000-4-2 standard |
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| CN104901655A (en) * | 2015-06-16 | 2015-09-09 | 成都宜川电子科技有限公司 | Signal generator |
| CN105388889A (en) * | 2015-12-17 | 2016-03-09 | 镇江市高等专科学校 | Signal generator for pavement construction machinery product control system |
| CN105388889B (en) * | 2015-12-17 | 2018-10-12 | 镇江市高等专科学校 | Signal generator for pavement construction machinery control of product system |
| CN111130507A (en) * | 2019-12-23 | 2020-05-08 | 北京大学 | Circuit for generating bimodal waveform conforming to IEC61000-4-2 standard |
| WO2021128910A1 (en) * | 2019-12-23 | 2021-07-01 | 北京大学 | Circuit generating bimodal waveforms that comply with iec 61000-4-2 standard |
| CN111130507B (en) * | 2019-12-23 | 2021-08-10 | 北京大学 | Circuit for generating bimodal waveform conforming to IEC61000-4-2 standard |
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| Publication number | Publication date |
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| CN103746673B (en) | 2016-08-31 |
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Denomination of invention: Full digital sliding pulse signal generator Effective date of registration: 20171108 Granted publication date: 20160831 Pledgee: Bank of Xi'an Limited by Share Ltd West Branch Pledgor: Shaanxi Hitech Electronic Co., Ltd. Registration number: 2017610000140 |
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